George j



No. 62l,0l0.

(No Model.)

a. J. WRIGHT}. BOOT or: sun: souz.

(Application filed Jan. 24, 1898.)

Patentd Mar. l4, I899.

UNITED STATES.

PATENT GEORGE J. WVRIGHT, OF NEW YORK, N. Y.

BOOT OR SHOE SOLE.

SPECIFICATION forming part of Letters Patent No. 621,010, dated March 14, 1899.

Application filed January 24, 1898. Serial No. 667,807. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE J. WRIGHT, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Boot or Shoe Soles, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertainsto make and use the same.

This invention relates to boot and shoe soles; and it has for its object to provide a simple and improved double sole in which the outer sole and slip-sole will maintain a positive and perfect relation.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of myimprovement are designated by the same letters of reference in each of the views, and in which Figure l is a plan View showing the inner face of the outer sole. Fig. 2 is a plan view showing the bottom face of the slip-sole, and Fig. 3 is a side view of a shoe having a double sole embodying my improvements.

Ordinarily when the outer soles and the slip-sole are secured together with smooth adjoining faces said soles have a more or less independent sliding movement with relation to each other, and in the trimming of the outer edges of such soles with a knife it is practically impossible to secure a uniform edge by reason of the tendency of the respective soles to stretch or move independently. Furthermore, in wear the independent movement of such soles, either laterally or longitudinally, causes one of said soles to project beyond the other sole at the side or front edges. The tendency of these soles to move with relation to each other also causes great strain upon the sewing-threads by which they are connected.

My invention is designed to efiectively overcome the objections above set forth and to so look the outer soles and the slip-sole together that they will at 'all times maintain a permanent fixed relative position, by which any sliding movement of one sole with respect to the other will be entirely obviated and whereby the squeakin'g or disagreeable noise frequently produced in walking is obviated.

In carrying out my invention I provide the top or inner surface a of the outer sole Awith a series of transverse slits or grooves a, and the bot-tom surface I) of the slip-sole B is correspondingly slitted or grooved, as at b. The grooves or slits of these adjoining surfaces preferably extend in parallel and transverse position entirelyacross the soles,as shown,and they relatively correspond, so that the ridges or projections between the grooves or slits of one sole will be received by the corresponding slits or grooves of the other sole. I form the transverse slits 0r grooves of approximately V-shaped serrations, providing a continuous connected series, as shown. It will be understood that these relatively grooved or slitted or corrugated surfaces interlock, as shown in Fig. 3, so that any relative movement of the soles longitudinally is prevented, and any lateral variation of the edges is likewise obviated by reason of the fact that said interlocking maintains a positive correlative position be tween the two soles.

When the adjoining faces of the soles are cemented or secured together'by adhesive material, the improved interlocking corrugated surface as comprised in my invention provides a materially-enlarged area for the adhesive contact-surfaces, and the efiective adhesion of the parts is thus enhanced. This intermeshing or interlocking of the respective soles provides 'a permanent connection of such a character that practically a solid single sole is formed of the separate outer sole and slipsole. A tightjoint at the edges is also secured and liability of separation between the soles (which is caused by the independent movement of one sole upon the other in the ordinary smooth-surface construction of this form of soles) is entirely obviated.

I am aware that it has been proposed to provide a boot or shoe with two soles connected by tongue-and-groove joints, whereby the soles are held together, and this construction I do not claim. In my improvement the soles are firmly pressed together, one being placed upon the other, and the two soles when thus connected are but little thicker than a single sole, and said soles are secured together by sewing or stitching in the usual manner.

Having fully described my invention, I claim as new and desire to secure by Letters Patent A shoe provided with two soles, said soles being provided in their adjacent surfaces with transverse grooves forming ribs or ridges, said ribs or ridges and said grooves being V- shaped in cross-section and adapted to interlock when the soles are connected, said soles being secured in place in the usual manner, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing Witnesses, this 21st day of January, 1898.

GEORGE J. \VRIGHT.

Witnesses:

L. M. MULLER, M. A. KNOWLES. 

